TM 9-2350-256-10
Table 2-1. PMCS-Continued.
Location
Crewmember
Not Fully
Item
Item to
Mission
No.
Interval
Check/
Procedure
Capable if:
Service
53
Weekly
M24/
Tighten screws after
Cont.
M24A1 IR
adjustment. Bend
Periscope
headrest to fit head. Allow
Night
5-minute warmup for
Check
periscope before
adjusting focus.
Remove dust caps from
left and right focus
controls. Loosen lock-
nuts on focus controls.
Using a screwdriver, turn
View is not clear
focus controls and
or is obstructed.
ensure view through eye-
piece is sharp and clear.
Tighten locknuts. Put
dust caps on left and right
focus controls.
Set IR POWER switch to
M24 IR periscope
OFF. Set MASTER
inoperative or
BATTERY switch to OFF.
missing.
Set B.O. SELECTOR
switch to B.O. DRIVE. Set
LIGHTING CONTROL
level to center (up)
position.
WARNING
Wait at least 2 minutes
after IR POWER switch
is turned off before
disconnecting power
cable. (High voltage is
present at power cable
for several minutes
after IR POWER switch
is OFF).
2-90